Find the product of $(p + 2 q) (p + 3 q)$ when $p = 1$ , $q = 0$ .

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Solution

The correct option is A $1$
$p \times p + 2 q \times p + p \times 3 q + 2 q \times 3 q$
$= p^{2} + 6 q^{2} + 5 p q$
at $p = 1, q = 0$
product $= 1 + 0 + 0 = 1$

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